摘要
裂隙岩体渗流问题广泛存在于采矿、水利、边坡和地下工程之中,严重影响工程稳定性,给大坝防渗帷幕的设计带来了困扰。结合深汕水底山水库工程,针对重力坝绕坝裂隙岩体渗流问题,利用3DEC离散元数值模拟的方式,构建含裂隙网络的精细三维地质模型,对基于地勘信息的防渗帷幕初步设计方案进行岩体裂隙渗流分析,提出了右岸处防渗端界沿水平方向延伸以及左岸整体防渗墙深度向下延伸的建议。
The seepage issues in fractured rock masses exist extensively in mining,hydraulic engineering,slope engineering,and underground engineering,which severely affect the stability of the projects and pose difficulties for the design of impervious curtains for dams.To solve the problem of fracture-type rock mass seepage in gravity dams,the 3DEC discrete element numerical simulation method was utilized to build a precise 3D geological model based on the Shenshan Underwater Reservoir Project including a fracture network,which conducts a detailed analysis of rock mass fracture-type seepage flow for the preliminary design scheme of seepage control curtain based on geological survey information.The preliminary design scheme of the anti-seepage curtain based on geological exploration information was analyzed for the seepage flow of rock fractures.Suggestions are proposed for the extension of the anti-seepage end boundary on the right bank horizontally and the downward extension of the overall anti-seepage wall depth on the left bank.
作者
黄小平
蒋志坚
平扬
朱珍德
吴俊宇
HUANG Xiaoping;JIANG Zhijian;PING Yang;ZHU Zhende;WU Junyu(Shenzhen Longgang Water Engineering Construction Management Center,Shenzhen 518000,China;China Power Construction Eco-Environment Group,Shenzhen 518000,China;Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University,Nanjing 210098,China)
出处
《水道港口》
2024年第2期244-250,共7页
Journal of Waterway and Harbor
基金
国家自然科学基金面上项目(51878249)。
关键词
3DEC离散元
裂隙网络
渗流分析
防渗帷幕
3DEC discrete element
fracture network
seepage analysis
impermeable curtain
作者简介
黄小平(1982-),男,江西省人,高级工程师,主要从事水务工程建设管理工作;通讯作者:朱珍德(1964-),男,河北省人,博士,教授,主要从事岩石力学与工程研究。E-mail:zzdnj@hhu.edu.cn。
